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Black steel 3U 12-slot rack enclosure 17 wide 11 deep

Black Box Corporation

Black Box Corporation JPM406A-R6 3U 12-slot rack-mount server rack

SKU CH-NH86-J3ZXY MPN JPM406A-R6

A 3U steel rack-mount enclosure with twelve locking slots for patch panels, TAA compliant and made in the United States

  • Rack height3U
  • Product typeRack Mount Enclosure
  • Main materialSteel
  • 3U height fits standard 19-inch racks
  • 12 slots support high-density patching
  • Cold-rolled steel construction ensures durability
  • TAA compliant for government procurement
  • Locking door secures fibre connections

3U 12-Slot Rack Enclosure

This Black Box Corporation JPM406A-R6 is a 3U rack-mount enclosure built from cold-rolled steel. It provides twelve slots for fibre patch panels or similar modules in a 19-inch rack. The unit measures 5.3 inches high, 17 inches wide and 11 inches deep. TAA compliance and GSA scheduling qualify it for federal procurement.

Suited for Structured Fibre Patching

Network managers who need a lockable, standard-depth enclosure for up to twelve adapter panels will find the dimensions match common 19-inch racks. Buyers who require deeper bays for active equipment or cable management rings should look at larger cabinets. The fixed 3U height also rules out installations that need only 1U or 2U of space.

Twelve-Slot Capacity Decides Fit

The single specification that determines suitability is the twelve-slot capacity. If the patching plan calls for exactly twelve panels or fewer, this enclosure fits; if the design demands more ports than twelve panels can provide, a higher-density or taller enclosure is required.

How it compares

Measured against everything we stock in Rack Cabinets & Shelves, at today’s prices. Recalculated every night.

Price $276.99
Pricier than about 74% of the 2,764 comparable items (median $106.99).

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Specifications

Product
Brand nameBlack Box
Product typeRack Mount Enclosure
Size & build
Rack height3U
Main materialSteel
Shipping weight8.62 kg
Package size483 × 410 × 178 mm

Questions about this item

How much heat does the 3U steel enclosure add to a rack running all day?

The cold-rolled steel enclosure is passive with no fans, so it adds no active heat; airflow depends on the rack's own cooling design.

What patch panels or modules must I already own to use the twelve slots?

The 12-slot front accepts standard LGX-compatible cassettes or adapter panels; you supply the panels that match your fibre connector type.

Will the 19-inch width and 11-inch depth fit alongside older 3U gear in my cabinet?

Yes, it matches the 19-inch EIA rack width and 3U height, and its 11-inch depth leaves room for deeper legacy units behind it.

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